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Displaying 9026 - 9050 of 73741

Quantum interference between photons from an atomic ensemble and a remote atomic ion

November 18, 2019
Author(s)
A. Craddock, J. Hannegan, D. Ornelas-Huerta, J. Siverns, A. Hachtel, E. Goldschmidt, James V. Porto, Q. Quraishi, S. Rolston
Many remote-entanglement protocols rely on the generation and interference of photons produced by nodes within a quantum network. Quantum networks based on heterogeneous nodes provide a versatile platform by utilizing the complimentary strengths of the

Influence of Board Spacing on Mitigating Wood Decking Assembly Ignition

November 17, 2019
Author(s)
Samuel L. Manzello, Sayaka Suzuki
As part of recent building code change discussions, it has been suggested that by increasing the spacing of boards, it may be possible to mitigate ignition of wood decking assemblies from wind-driven firebrand showers. An experimental series was undertaken

Application of INAA methods for KRISS infant forumla CRM analysis: Standardization of INAA at KRISS

November 15, 2019
Author(s)
Hana Cho, Kishore B. Dasari, Radojko Ja?imovi?, Rolf L. Zeisler, Nicholas Sharp, Sun-Ha Kim, Gwang Min Sun, Yong-Hyeon Yim
We have established an instrumental neutron activation analysis (INAA) method, including k0- based INAA, at the Korea Research Institute of Standards and Science (KRISS) for the certification of reference materials. As part of establishing INAA

Chalcogenide Topological Insulators

November 15, 2019
Author(s)
Joseph A. Hagmann
The purpose of this chapter is to introduce the reader to the chalcogenide materials systems that host the topological insulator phase of quantum matter. Specifically, the HgTe quantum well 2D topological insulator system and the V2VI3-type bismuth- and

Crosstalk in microwave SQUID multiplexers

November 15, 2019
Author(s)
John A. Mates, Daniel T. Becker, Douglas A. Bennett, Bradley J. Dober, Johnathon D. Gard, Gene C. Hilton, Daniel S. Swetz, Leila R. Vale, Joel N. Ullom
Low-temperature detector technologies provide extraordinary sensitivity for applications ranging from precision measurements of the cosmic microwave background to high-resolution, high-rate x-ray, and c-ray spectroscopy. To utilize this sensitivity, new

Nano-opto-electro-mechanical switches operated at CMOS-level voltages

November 15, 2019
Author(s)
Christian Haffner, Andreas Joerg, Michael Doderer, Daniel Chelladurai, Felix Mayor, Comsin Ioan Roman, Yuriy Fedoryshyn, Mikael Mazur, Maurizio Burla, Henri J. Lezec, Vladimir A. Aksyuk, Juerg Leuthold
Reprogrammable optical networks that operate in symbiosis with CMOS electronics promise to advance technologies such as optical neural networks. However, current electro-optical switching technologies fail to combine CMOS-voltages, micrometer-scale

SAGE: A proposal for a Space Atomic Gravity Explorer

November 15, 2019
Author(s)
Nathan Newbury, Chris Oates, Jun Ye, Guglielmo Tino, A Bassi, G Bianco, K Bongs, L Cacciapuoti, M. L. Chiofalo, X Chen, A Derevianko, W Ertme, N Gaaloul, Patrick Gill, P. W. Graham, J. M. Hogan, L Iess, Mark Kasevich, H Katori, Carsten Klempt, X Lu, Long-Sheng Ma, H Muller, A Peters, N Poli, Rasel E, G Rosi, A Roura, C Salomon, S Schiller, W Sleich, D Schlippert, F Schreck, C Schubert, Sorrentino F, Uwe Sterr, J. W. Thomsen, G Vallone, F Vetrano, P Villoresi, W von Klitzing, P Wolf, Nan Yu, M.S. Zhan
The proposed mission \Space Atomic Gravity Explorer (SAGE) has the scientifi c objective to investigate gravitational waves, dark matter, and other fundamental aspects of gravity as well as the connection between gravitational physics and quantum physics

Atomic-scale mechanism of unidirectional oxide growth

November 14, 2019
Author(s)
Xianhu Sun, Wenhui Zhu, Dongxiang WU, Zhenyu Liu, Xiaobo Chen, Lu Yuan, Guofeng Wang, Renu Sharma, Guangwen Zhou
A fundamental knowledge of the unidirectional growth mechanisms is required for precise control on size, shape, and thereby functionalities of nanostructures. Using transmission electron microscopy that spatially and temporally resolves CuO nanowire growth

Physics-based Simulation of Agile Robotic Systems

November 14, 2019
Author(s)
Pavlo Piliptchak, Murat Aksu, Frederick M. Proctor, John L. Michaloski
Development and testing of industrial robot environments is hampered by the limited availability of hardware resources. Simulations provide a more accessible and readily modifiable alternative to physical testing, but also require careful design to ensure

Voter Records Interchange Common Data Format Specification Version 1.0

November 14, 2019
Author(s)
John P. Wack
This document presents a specification for voter records data interchange related to voter registration, i.e., registration requests from online voter registration made to voter registration systems, and responses to the requests returning from the voter

A critical evaluation of indentation crack lengths in air

November 13, 2019
Author(s)
Robert F. Cook
A extensive overview is presented of Vickers indentation crack lengths in ceramics in air. Measurement of such crack lengths is one of the most common and powerful assessments of the fracture properties of ceramics and the overview provides a critical

Enhanced Gas Uptake in a Microporous Metal-Organic Framework via a Sorbate Induced-Fit Mechanism

November 13, 2019
Author(s)
Mei-Hui Yu, Brian Space, Douglas Franz, Wei Zhou, Chaohui He, Libo Li, Rajamani Krishna, Ze Chang, Wei Li, Tong-Liang Hu, Xian-He Bu
Physical adsorption of gas molecules in microporous materials is an exothermic process, with desorption entropy driving a decrease in uptake with temperature. Enhanced gas sorption with increasing temperature is rare in porous materials and is indicative

Tailoring the Pore Geometry and Chemistry in Microporous Metal-Organic Frameworks for High Methane Storage Working Capacity

November 13, 2019
Author(s)
Kai Shao, Jiyan Pei, Jia-Xin Wang, Yu Yang, Yuanjing Cui, Wei Zhou, Taner N. Yildirim, Bin Li, Banglin Chen, Guodong Qian
We realize that tailoring pore size/geometry and Chemistry, by virture of alkynl or naphthalene replacing phenyl within a series of isomorphic MOFs, can optimize methane storage working capacities, affording an exceptionally high working capacity of 203 cm

A Robust Principal Component Analysis for Outlier Identification in Messy Microcalorimeter Data

November 12, 2019
Author(s)
Joseph W. Fowler, Bradley K. Alpert, Young I. Joe, Galen C. O'Neil, Daniel S. Swetz, Joel N. Ullom
A principal component analysis (PCA) of clean microcalorimeter pulse records can be a first step beyond statistically optimal linear filtering of pulses toward a fully nonlinear analysis. For PCA to be practical on spectrometers with hundreds of sensors

Establishing Standards and Methods for Qualification and Validation of New Particle Measurement Technologies

November 12, 2019
Author(s)
Srivalli Telikepalli, Dean C. Ripple, Kurt D. Benkstein, Kristen L. Steffens, Michael J. Carrier, Christopher B. Montgomery
Numerous particle sizing and counting methods exist for measuring particles in the submicrometer, subvisible, and visible size range. This article will briefly describe some key aspects that need to be considered for the most commonly used methods in order

Guidebook for Standards-Based Testing of Radiation-Detection Systems

November 12, 2019
Author(s)
Leticia S. Pibida, Chritina Forrested, Peter Chiaro, Don Potter
This guide describes the test setups and processes needed to perform standards-based testing of radiological and nuclear detection systems. This guide is intended to reduce the potential for misinterpretation of performance requirements, test methods, and

The FeoC [4Fe4S] Cluster Is Redox-Active and Rapidly Oxygen-Sensitive

November 12, 2019
Author(s)
Aaron T. Smith, Richard O. Linkous, Nathan Max, Alexandrea E. Sestok, Veronika Szalai, Kelly N. Chacon
The acquisition of iron is essential to establishing virulence among most pathogens. Under acidic and/or anaerobic conditions, most bacteria utilize the widely-distributed ferrous iron (Fe2+) uptake (Feo) system to import metabolically-required iron. The

DATA REGISTRATION FOR IN-SITU MONITORING OF LASER POWDER BED FUSION PROCESSES

November 11, 2019
Author(s)
Shaw C. Feng, Yan Lu, Albert W. Jones
Increasingly, a wide range of in-situ sensors are being instrumented on additive manufacturing (AM) machines. Researchers and manufacturers use these sensors to collect a variety of data to monitor process performance and part quality. The amount and speed

Estimating Interzonal Leakage in a Net-Zero Energy House

November 11, 2019
Author(s)
Lisa C. Ng, Lindsey Kinser, Steven J. Emmerich, Andrew K. Persily
The Net Zero Energy Residential Test Facility (NZERTF) was constructed at the National Institute of Standards and Technology (NIST) to support the development and adoption of cost-effective net zero energy designs and technologies. The 250 m2 two-story
Displaying 9026 - 9050 of 73741
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